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TRUSTED BY MALVERNE, NY HOMEOWNERS

  • Average homeowner rating star icon5
    Average homeowner rating
  • Verified reviews icon15
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Malverne, NY

*The Angi rating for Generator Install companies in Malverne, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Malverne, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on May 29, 2026

Find Generator install pros in Malverne

Avatar for No Shorts Electric, Inc.
No Shorts Electric, Inc.
5.0(
99
)
Portable Generator - Install

Serving Malverne, NY and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"Great people did a great job installing a transfer switch, fast and easy. Will hire again."
old electrical meter and meter pan
Service Upgrade
Service Upgrade
old electrical meter and meter pan
old 100 amp fused electrical panel

+3

Response time2 hrs
Response rate96%
Recommended by97%of homeowners
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Avatar for GenShield LLC
GenShield LLC
5.0(
7
)
Fixed Generator - Repair

Serving Malverne, NY and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We specialize in generator service and repair and provide unmatched customer service! You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!\n

10 neighbors recently requested a quote
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Avatar for A/C Performance Power, Inc.
A/C Performance Power, Inc.
5.0(
4
)
Generator - Repair - For Business

Serving Malverne, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Jim, the Owner provided timely, Expert generator repair, to get a 15 year old 30KW generator that hadnâ  t run in years operational in 30 minutes. We were fortunate to find him, and appreciate his skill, integrity...truly a consummate Professional ! 5+ Star recommendation"
Generator repair
Generator repair
Generator repair
Generator repair
Generator repair

+27

Response time9 hrs
Recommended by100%of homeowners
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Avatar for Real Power Electrical Contractors
Real Power Electrical Contractors
5.0(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Malverne, NY and surrounding areas

Approved

In business since 2014

Credit card accepted

Offers commercial services

"They worked as a subcontractor for a commercial project I had with a county water station. Marty is very knowledgeable, on time, cooperative with other trades, neat. His crew is also the same. Great guy, I would hire him again."
Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Mr. Wonderful's Electric, Inc.
Mr. Wonderful's Electric, Inc.
4.7(
14
)
Portable Generator - Install

Serving Malverne, NY and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Quick response; courteous and professional. Would definitely recommend this company for any electrical. I would definitely call Mr. wonderful Electrical for future electrical needs."
200 amp 2 meter service
200 amp PVC service
Chandelier
LED hi hats
200 amp panel

+5

Response time4 hrs
Response rate94%
Recommended by92%of homeowners
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Avatar for Star Electric
Star Electric
4.2(
123
)
Fixed Generator - InstallFixed Generator - Repair

Serving Malverne, NY and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"i recently had a tesla charger installed, and i am extremely satisfied with the service. the electrician did an outstanding job he was professional, knowledgeable, and completed the installation much faster than i expected while maintaining excellent quality. the work was clean, efficient, and everything was installed perfectly. on top of that, his pricing was very reasonable compared to other estimates i received. it’s not often you find someone who delivers great workmanship, works efficiently, and offers affordable rates. i highly recommend him to anyone needing electrical work or an ev charger installation."
49 neighbors recently requested a quote
Recommended by82%of homeowners
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Showing 1-10 of 156
Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

The Malverne, NY homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

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